1. 4",7", 8",10",14",20", 25", 28" inch rice rubber roller 2. ... ,6 inches,7 inches, 8 inches,10 inches,14 inches,20 inches, 25 inches, 28 inchesMaterial: SBR, NBR, POLYColor ... the main part of rice huller machine, because of speed difference of veer and reversion between two rubber rollers, ... performance is good. It makes the machine to reduce the load vibration, and to increase the rubber roller's ...